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slob: Fix early boot kernel crash

Commit fd3142a59af2012a7c5dc72ec97a4935ff1c5fc6 broke
slob since a piece of a change for a later patch slipped into
it.

Fengguang Wu writes:

  The commit crashes the kernel w/o any dmesg output (the attached one is
  created by the script as a summary for that run). This is very
  reproducible in kvm for the attached config.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Christoph Lameter %!s(int64=13) %!d(string=hai) anos
pai
achega
44a8bdea19
Modificáronse 1 ficheiros con 1 adicións e 1 borrados
  1. 1 1
      mm/slob.c

+ 1 - 1
mm/slob.c

@@ -518,7 +518,7 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size,
 
 
 	if (c) {
 	if (c) {
 		c->name = name;
 		c->name = name;
-		c->size = c->object_size;
+		c->size = size;
 		if (flags & SLAB_DESTROY_BY_RCU) {
 		if (flags & SLAB_DESTROY_BY_RCU) {
 			/* leave room for rcu footer at the end of object */
 			/* leave room for rcu footer at the end of object */
 			c->size += sizeof(struct slob_rcu);
 			c->size += sizeof(struct slob_rcu);